[2] Aimyon was influenced to become a singer-songwriter in part because of her grandmother, who herself aspired to be a singer or actress, and her father, who worked as an audio engineer; she grew up with music and started writing songs when she was in middle school.

[3][5] At first, she looked at an instruction book by herself and began to teach herself how to play the guitar, covering songs by Yutaka Ozaki and Spitz.

[9] However, as she wanted to "grow into an artist who will be loved for a long time rather than making a debut in a hurry", it was decided that her first release would be under an indie label as test marketing.

[12] Its extreme lyrics became a hot topic, and although TV and radio stations refrained from broadcasting, it ranked 10 on the Oricon Indies Weekly Chart.

The staff at Unborde unanimously chose this song as her debut single with the theme of a high school girl's suicide.

[20] On September 13, she released her first full-length album Seishun no Excitement which recorded long sales for more than two years on Oricon charts.

"[26] On January 25, 2019, Aimyon released the theme song "Ra, no Hanashi" for the feature animation Ashita Sekai ga Owaru to Shitemo (Even if the World Ends Tomorrow).

On April 17, she released her seventh single "Harunohi" which was used as the theme song for Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~.

[27] She wrote and composed "Dare ni Datte Wake ga Aru" (Everybody Has a Reason) and "Tachimachi Arashi" for the film Sayonara Kuchibiru (Goodbye Lip), which was released on May 31.

[30] It was the first time a solo artist had been in charge of the theme song for a serial TV novel, and it had been seven and a half years since a singer who was born after the start of the Heisei era.

Her musical influences include Spitz, Shōgo Hamada, Takuro Yoshida, Eigo Kawashima, Yutaka Ozaki, Flipper's Guitar, Kenji Ozawa, and Ken Hirai among others.

[31][32][33][34][35] She looks up to male singer-songwriters who choose words with opposite sensibility, emphasize lyrics rather than melodies, and prefers artists who are good at metaphorical expressions.

The Adult Empire Strikes Back she was drawn to Tower of the Sun, Tarō Okamoto, Takuro Yoshida, and Betsy & Chris.

[38] Tomonori Shiba says that "Aimyon is the 'J.GIRL' who inherited Shogo Hamada at the end of the Heisei era, and the legitimate successor of Misu-Chiru and Spitz who has finally appeared."

[39] Voice actor Wasabi Mizuta has professed to being a fan, and Aimyon has also been spoken highly of by Yurano Ochi of Atarashii Gakko!.